Special teams including SHG

First, I apologize if (a) this is common knowledge; or (b) someone else has already done this. I'm pretty new to hockey stats, though I've been a fan of the game for a long time. I searched, but didn't find something similar.

It seems to me that short-handed goals ought to count as far as a team's special-teams performance. A great PP isn't so great if you give up a lot of SHG, and a great PK can be even better if you score a lot of SHG.

So, as of 2/23/19, here are the top teams in the league for special teams offense, calculated as (PP goals - SHG allowed) / PP minutes:

1

Tampa

28.8%

2

SJ

23.0%

3

Winnepeg

22.6%

4

Boston

20.9%

5

Florida

20.9%

6

NYR

20.1%

7

Calgary

20.1%

8

Minny

20.0%

9

Chicago

19.8%

10

Colorado

19.7%

And here are the top teams in the league for special teams defense, calculated as (PP goals allowed - SHG scored) / SH minutes:

1

Arizona

92.7%

2

Tampa

88.4%

3

NJ

87.7%

4

SJ

87.1%

5

Vegas

87.0%

6

Columbus

86.8%

7

Calgary

86.6%

8

Pittsburgh

86.0%

9

Nashville

84.5%

10

Winnepeg

84.4%

Two thoughts: (1) dang, Tampa Bay's PP is really lights-out, way better than anyone else in the league. (2) dang, Arizona's PK is just as good as Tampa's PP.

Finally, here's an attempt to calculate the average goals/game due to special teams. It's calculated as (PPG + SHG - PPGA - SHGA) / G:

1

Tampa

0.58

2

SJ

0.31

3

Calgary

0.28

4

Arizona

0.25

5

Winnepeg

0.21

6

Florida

0.20

7

Boston

0.13

8

Vegas

0.10

9

NJ

0.08

10

Pittsburgh

0.07

11

Minny

0.06

12

Dallas

0.03

13

Colorado

0.03

14

Columbus

0.02

15

Toronto

0.02

16

NYI

0.00

Any team not on this list is a net negative for special teams--they're giving up more goals in special-teams situations than they're scoring.

Again, quick reaction: (a) Tampa is nearly twice as good as the next positive team, San Jose; (b) Toronto is essentially special-teams neutral, which surprises me; (c) Arizona may not have a great PP%, but their special teams contribute a lot to their offense.